Extech 610022-B pH Calibration Checker

 Features:

• Simulates values for pH 4, 7 and 10 (+/-0.1%FS accuracy) 
• Simple to use - connect the calibration cable to device needing calibration and select simulation range 
• High Ohm range for industrial applications 
• Easy verification - if your pH meter displays the same value that is being simulated, then it is in calibration 
• Size: 3.5 x 2.3 x 1" (60x92x25mm)/10 Oz (284g) 
• Complete with 9V battery
• CE approved, one year warranty